Save money by making compost! Use this science fair project idea to determine which composting methods best encourage decomposition of organic matter.

This activity spotlights everyone's favorite reindeer, Rudolph, and preserves your child's handprints in his "antlers".

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

Science fair project in which you will build your own algae photobioreactor which will meet the physiological requirements of algae for maximum growth.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

This Mother's Day, mix in some fifth grade science learning to create this fabulous fudge!

The objective of this science fair project idea is to find out whether refrigerating cosmetics will extend their shelf-life and longevity.

Pumpkin carving party activities are great for a pre-Halloween party. Try pumpkin carving party activities, including jack-o'-lantern ideas and fall recipes.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

Learn how to make a paper snowflake with these simple instructions. Help your child learn how to make a paper snowflake with only paper and scissors.

Help your kids fall in love with nature by making a simple clay bird bath. Set it up in your yard and watch the animals venture in for a sip of water.

This Pysanky egg-decorating activity is perfect for young artists. Bring a little color and creativity to any holiday with this traditional Ukrainian craft.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

Test whether cutting up meats will make it cook faster than just cooking it whole.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Determine whether the application of Febreeze will lower the bacterial count.

Chlorine and chloramine are added to our tap water to kill harmful microorganisms. What is the best way to filter these disinfectants in your drinking water?